<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" v-model="isCheck" />
    </label>
    <span>
      <span
        >已完成{{
          todos.filter((item) => (item.done ? item : "")).length
        }}</span
      >
      / 全部{{ todos.length }}</span
    >
    <button class="btn btn-danger" @click="delAllData">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "Footer",
  props: ["todos", "setAll", "delAllData"],
  computed: {
    isCheck: {
      get() {
        return this.todos.every((item) => item.done) && this.todos.length !== 0;
      },
      set(value) {
        this.setAll(value);
      },
    },
  },
};
</script>

<style>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>